77897960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{278207}}^1$

素因数の和:278225

約数の個数: 32

約数和(自身を含む): 200309760

約数和(自身を除く): 122411800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 278207, 556414, 1112828, 1391035, 1947449, 2225656, 2782070, 3894898, 5564140, 7789796, 9737245, 11128280, 15579592, 19474490, 38948980, 77897960]

約数ペア:

[(1, 77897960), (2, 38948980), (4, 19474490), (5, 15579592), (7, 11128280), (8, 9737245), (10, 7789796), (14, 5564140), (20, 3894898), (28, 2782070), (35, 2225656), (40, 1947449), (56, 1391035), (70, 1112828), (140, 556414), (280, 278207)]